diff --git a/bangdori/Valid Palindrome.js b/bangdori/Valid Palindrome.js
new file mode 100644
index 0000000..0b4a2f3
--- /dev/null
+++ b/bangdori/Valid Palindrome.js	
@@ -0,0 +1,22 @@
+/**
+ * @param {string} s
+ * @return {boolean}
+ */
+var isPalindrome = function (s) {
+  const removedNonAlphanemuricString = [...s.toLowerCase()].filter(
+    (alpha) => isLowerAlphabet(alpha) || isNumeric(alpha)
+  );
+
+  return (
+    removedNonAlphanemuricString.join("") ===
+    removedNonAlphanemuricString.reverse().join("")
+  );
+};
+
+function isLowerAlphabet(character) {
+  return character >= "a" && character <= "z";
+}
+
+function isNumeric(character) {
+  return character >= "0" && character <= "9";
+}